Improving GPT‑5.6 Sol in ChatGPT—and expanding access to GPT-5.6 Luna for free users
OpenAI improves GPT-5.6 Sol accuracy and expands free user access to GPT-5.6 Luna
OpenAI has updated GPT-5.6 Sol with improved accuracy and consistency while simultaneously expanding GPT-5.6 Luna access to free ChatGPT users with unlimited everyday chats. This dual move signals OpenAI's strategy to both sharpen its premium offering and lower barriers for mass adoption. The free-tier expansion is notable as competition for AI user base intensifies.